Police say the officer had been conducting random speed checks on Orange Grove Rd in Salisbury at about 6.30am on Wednesday.
When he stepped onto the road to flag down a car, the vehicle was steered towards him and struck him.
The officer is in a stable condition and undergoing medical assessment.
The car drove off and was found a short time later abandoned on Eaton Place in Wishart.
Police have appealed for public information to identify the man driving a stolen Mercedes C250 sedan with the Queensland licence plate 132 ZCT.
It was found a short time later abandoned on Eaton Place in Wishart.
Police will provide an update to the incident at 2pm.Jump to next article